Absence of a polar phase in perovskite chromite RCrO3 (R=La and Pr)

Kenji Yoshii, Naoshi Ikeda, Yutaka Shimojo, Yoshinobu Ishii

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Magnetic and dielectric properties have been studied for LaCrO3, PrCrO3, and their solid solution La0.5Pr0.5CrO3, which belong to a family of the ferroelectric orthochromite series RCrO3 (R: rare earths). The magnetic measurements confirm that the materials show canted antiferromagnetic ordering at 240–288 K. Neutron diffraction patterns could be fitted with the centrosymmetric Pnma, which is different from the non-centrosymmetric structure proposed for the ferroelectric phase of NdCrO3. The large dielectric constants are likely due to the hopping of charge carriers as proposed previously for other chromites.

Original languageEnglish
Pages (from-to)96-101
Number of pages6
JournalMaterials Chemistry and Physics
Publication statusPublished - Apr 1 2017


  • Chromite
  • Ferroelectricity
  • Magnetism
  • Perovskite

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics


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